Traditional Fresnel lenses cannot be used for active axial focusing without mechanical movement. In order to better apply the Fresnel lens to imaging, display, target tracking, photovoltaic system, and other fields, we proposed a ring chamber liquid Fresnel lens based on the typical structure of Fresnel lens and electrowetting effect. The proposed lens can be controlled by voltage to change the angle of inclination of the liquid surface within the ring chamber. So the axial focal length can be adjusted by controlling the deflection direction of the beam. The experimental results show that the proposed liquid Fresnel lens has the function of axial focusing. Its driving voltage is about 20 V, saturation voltage is about 220 V, and focal length varies from -52 mm to -73 mm.